Two stage dry feed gasification system

A system for gasification of a carbonaceous material, comprising:

• (a) a reactor upper section, adapted to react a first mixture product comprising syngas with i) a solid carbonaceous feedstock, and ii) recycled residual solids, fines and particulates to produce a second mixture product, the reactor upper section including:
• an inlet to receive the first mixture product comprising syngas from a reactor lower section, and
• an outlet to convey the second mixture product to a first separating device;
• (b) the first separating device adapted to separate the second mixture product therein to produce a first solid product stream and a first gaseous product stream, and including:
• an inlet to receive the second mixture product conveyed from the reactor upper section,
• an outlet to convey the first solid product stream to the reactor lower section, and
• an outlet to convey the first gaseous product stream to a heat recovery unit;
• (c) the heat recovery unit, adapted to transfer heat from the first gaseous product stream to water and produce steam and a first gaseous product stream of reduced temperature, the heat recovery unit including:
• an inlet to receive the first gaseous product stream from the first separating device, and
• an outlet to convey the steam to the reactor lower section;
• (d) the reactor lower section, adapted to react the first solid product stream of part (b), the steam of part (c), and a gas stream to produce heat and the first mixture product comprising syngas of part (a), the reactor lower section including:
• one or more inlets to receive i) the first solid product stream of part (b), ii) the steam of part (c), and iii) a gas stream,
• an outlet to convey the first mixture product to the reactor upper section;
• and
• wherein the reactor lower section is further adapted to convey the heat to the reactor upper section;
• (e) a solid-gas mixer, adapted to mix a carbonaceous feedstock and the first gaseous product stream of reduced temperature therein to form a warm solid-gas mixture, wherein moisture is transferred from the carbonaceous feedstock to the first gaseous product stream in the warm solid-gas mixture, the solid-gas mixer including:
• one or more inlets to receive the carbonaceous feedstock and the first gaseous product stream of reduced temperature of part (c), and
• an outlet to convey the warm solid-gas mixture to a second separating device;
• (f) the second separating device, adapted to separate the warm solid-gas mixture and to produce a substantially dry feedstock and a second gaseous product stream, the second separating device including:
• an inlet to receive the warm solid-gas mixture conveyed from the solid-gas mixer,
• an outlet to convey the substantially dry feedstock into the reactor upper section, and
• an outlet to convey the second gaseous product stream to particulate filtering device;
• (g) the particulate filtering device, adapted to separate the second gaseous product stream therein to remove residual solids, fines and particulates, the particulate filtering device including:
• an inlet to receive the second gaseous product stream conveyed from the second separating device, and
• an outlet to convey the residual solids, fines and particulates to the reactor upper section.